hw/nvme: fix null pointer access in directive receive
nvme_directive_receive() does not check if an endurance group has been
configured (set) prior to testing if flexible data placement is enabled
or not.
Fix this.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1815
Fixes: 73064edfb864 ("hw/nvme: flexible data placement emulation")
Reviewed-by: Jesper Wendel Devantier <j.devantier@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index d217ae9..e5b5c70 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -6900,7 +6900,7 @@
case NVME_DIRECTIVE_IDENTIFY:
switch (doper) {
case NVME_DIRECTIVE_RETURN_PARAMS:
- if (ns->endgrp->fdp.enabled) {
+ if (ns->endgrp && ns->endgrp->fdp.enabled) {
id.supported |= 1 << NVME_DIRECTIVE_DATA_PLACEMENT;
id.enabled |= 1 << NVME_DIRECTIVE_DATA_PLACEMENT;
id.persistent |= 1 << NVME_DIRECTIVE_DATA_PLACEMENT;